LPI Exam 101-500 Topic 1 Question 93 Discussion

Actual exam question for LPI's 101-500 exam

Question #: 93
Topic #: 1

[All 101-500 Questions]

What does the + symbol mean in the following grep regular expression:

grep '^d[aei]\+d$' /usr/share/dict/words

AMatch the preceding character set ([aei]) one or more times.

BMatch the preceding character set ([aei]) zero or more times.

CMatch the preceding character set ([aei]) zero or one times.

DMatch a literal + symbol.

Show Suggested Answer

Suggested Answer: C

by Matthew at Jul 17, 2024, 12:09 AM

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Thea

1 months ago

Wait, is the + symbol actually a secret morse code message? I should have brought my tin-foil hat to this exam!

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Dorcas

5 days ago

No, it's not a secret message, just a regular expression symbol.

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Edelmira

16 days ago

A) Match the preceding character set ([aei]) one or more times.

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Carlee

1 months ago

Selecting option D would be a bit of a 'plus' sized mistake. The + symbol here is a quantifier, not a literal character to be matched.

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Paola

1 months ago

Option C is tempting, but the + symbol is not for zero or one matches. That would be the ? symbol. The + is clearly for one or more matches.

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Eve

4 days ago

A) Match the preceding character set ([aei]) one or more times.

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Latanya

1 months ago

I was about to choose option B, but then I realized that zero or more matches wouldn't make sense for this expression. The + symbol is definitely for one or more matches.

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Fabiola

7 days ago

Yes, the + symbol indicates one or more matches in this context.

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Hector

13 days ago

I agree, option A makes sense for this expression.

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Katy

18 days ago

A) Match the preceding character set ([aei]) one or more times.

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Jennifer

2 months ago

The + symbol in the given grep regular expression means that the preceding character set [aei] should be matched one or more times. This is the correct answer, option A.

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